are the orbits of earth and the moon perfect circles?

Question

I REALLY NEED HELP ON THIS.

Answer 1

No, the orbits of all the planets and the moons are ellipses.
An ellipse is a circle that is slightly squished. The more squished, the greater the "eccentricity" of the orbit.
The greater the eccentricity, the larger the difference between the farthest and the closest approach.

When you are talking about planets, the sun is at one "focus" of the ellipse - the distance from the focus to the centre of the ellipse is a measure of the eccentricity of the planet's orbit.
"Perihelion" is the point in the planet's orbit when it is closest to the sun and "aphelion" is the point farthest from the sun.

For earth, aphelion is 1.016 AU and perihelion is .9832 AU.
Earth's orbit eccentricity is .0167 (which is pretty close to a perfect circle).

For the moon, perigee (closest to the Earth) is .0024 AU, and apogee (farthest from the Earth) is .0027 AU. Eccentricity is .0549 (so not as close to a circle as the Earth's orbit is).

Answer 2

The Earth’s orbit is not a perfect circle nor is it elliptical. The orbit varies only slightly from a circle.
Important: see misconceptions on Earth elliptical.

http://casnov1.cas.muohio.edu/scienceforohio/Seasons/Bg.html

The Moon moves around the Earth in an elliptical orbit of small eccentricity, inclined by 5 deg.

Answer 3

No. The Earth's orbit about the sun, and the Moon's orbit about the Earth are both ellipses. The Earth varies in it's distance to the sun by about 3 million miles every 6 months, and the moon by about 11, 000 miles every 14 days.

Answer 4

no they are not perfect cirlces. I used to think they were oval shaped but they are actually called "Ellipse". Just in case, the Earth and the other planets that we know are ellipse shaped too (a tiny bit).

Answer 5

No, Neither is. They are ellipses with a slight degree of eccentricity.

Answer 6

no they r not . they are elliptical orbits.

Answer 7

No. They are ellipses.